高邮凹陷陈堡地区断裂对油气运聚的控制作用

陈堡地区油气勘探实践表明,油气的分布和聚集与断层有着极为密切的关系,断层既可作为油气运移的通道,又可作为油气聚集的遮挡物。断裂在油气运聚中的作用如何,将确定油气的聚集层位及分布范围。笔者通过断裂对油气运聚条件控制的分析,指出断裂控制了圈闭的形成及成因类型、断层的活动期控制着油气的运聚时期及层位、封闭性断层与泥岩盖层的组合是控制油气成藏的重要因素,最后建立了该区的断裂的控油气成藏模式。

Control of Faults on Hydrocarbon Accumulation in Chenbao Area of Gaoyou Depression

Hydrocarbon exploration practice in Chenbao Area indicates that hydrocarbon distribution and accumulation are closely correlated with faults. Faults sometimes became hydrocarbon migration pathway and sometimes block off hydrocarbon migration. The function of faults on hydrocarbon accumulation is that they control hydrocarbon accumulation layer and its distribution. By the analysis of control of faults on hydrocarbon accumulation conditions, it is pointed out that faults control the form and genetic types of traps, faults moving periods controll the hydrocarbon accumulation periods and layers, and the combination of sealing fault and caprock that is important factor to control hydrocarbon accumulation. A hydrocarbon accumulation pattern is established.